feat(customer): list customer (#6206)

**What**

- GET /admin/customers
- GET /admin/customer-groups

packages/types/src/dal/index.ts

@@ -1,10 +1,10 @@
 import { Dictionary, FilterQuery, Order } from "./utils"
 
-export { FilterQuery } from "./utils"
+export { FilterQuery, OperatorMap } from "./utils"
 
 /**
  * @interface
- * 
+ *
  * An object used to allow specifying flexible queries with and/or conditions.
  */
 export interface BaseFilterable<T> {